Which of the Following Statements Is True

Which of the following statements is true?

A) People achieve their peak bone mass after the first four decades of their life.
B) The skeleton no longer adds to bone density after 20 years of age.
C) The bones begin to lose density after 40 years of age regardless of calcium intake.
D) People do not need calcium throughout their life.
E) The bones of an individual actively grow until 30 years of age.